Flavia the Heretic (Italian: Flavia, la monaca musulmana, lit. "Flavia, the Muslim nun") is a 1974 Italian-French nunsploitation film directed by Gianfranco Mingozzi.
Set in Apulia during the Ottoman invasion of Otranto, the film tells the story of Flavia (Florinda Bolkan), a nun who collaborates with the invaders' leader Ahmed (Anthony Higgins as Anthony Corlan) to avenge her past misfortunes.